Ca12Al14032F2.＇Eu3＋ red phosphors were prepared by the sol-gel method with CF3COOH as the fluorine source. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, and photoluminescence spec...Ca12Al14032F2.＇Eu3＋ red phosphors were prepared by the sol-gel method with CF3COOH as the fluorine source. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, and photoluminescence spectra, as well as thermogravimetric and differential thermal analysis were utilized to characterize the samples. All the samples were single phase with a cubic structure. The as-obtained Ca12Al14Oa2F2：Eu3＋ red phosphors consisted of nanoparticles with sizes of approximately 40-100 nm. Under the excitation of UV light, CalEA114032F2：Eu3＋ exhibited the characteristic emissions of Eu3＋, and the effect of annealing temperature, an- nealing time, and CF3COOH and Eu3＋ concentrations on the luminescence intensity were discussed in detail.展开更多
基金supported by the National Natural Science Foundation of China(21161004)the Natural Science Foundation of Guangxi Province(2011GXNSFA018048)
文摘Ca12Al14032F2.＇Eu3＋ red phosphors were prepared by the sol-gel method with CF3COOH as the fluorine source. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, and photoluminescence spectra, as well as thermogravimetric and differential thermal analysis were utilized to characterize the samples. All the samples were single phase with a cubic structure. The as-obtained Ca12Al14Oa2F2：Eu3＋ red phosphors consisted of nanoparticles with sizes of approximately 40-100 nm. Under the excitation of UV light, CalEA114032F2：Eu3＋ exhibited the characteristic emissions of Eu3＋, and the effect of annealing temperature, an- nealing time, and CF3COOH and Eu3＋ concentrations on the luminescence intensity were discussed in detail.
